True and False
1. If two particles of different masses have equal kinetic energy
they also have equal momentum.
2. If the momentum of a single particle is zero, its kinetic energy may not be zero.
3. The kinetic energy is always conserved both in elastic collisions and inelastic collisions.
4. A large force always produces a larger impulse on a body than a smaller force.
5. If the kinetic energy of a single particle is zero, its momentum must be zero.
6. The linear momentum of an object is proportional to the mass of the object.
7. The momentum of an isolated system is always conserved no matter what kind of force is acting inside the system.
1) False
2) False
3) False
4)Falso
5) True
6) True
7) True (note: I take "isolated system" to mean "closed system")
True and False 1. If two particles of different masses have equal kinetic energy they also...
V If two particles of different masses have equal kinetic energy they also have equal momentum. The kinetic energy is always conserved both in elastic collisions and inelastic collisions. If the momentum of a single particle is zero, its kinetic energy may not be zero. The linear momentum of an object is proportional to the mass of the object. A large force always produces a larger impulse on a body than a smaller force. If the kinetic energy of a...
Kinetic energy is only conserved in an inelastic collision. True False Two objects collide ans stick together. This is an elastic collision. True False Momentum is conserved in both elastic and inelastic collisions. True False
True or false question: Kinetic energy is a state scalar quantity and depends on reference system. Which one of the following statements about the completely INELASTIC collision between two particles is NOT correct? (A) They have common speed after collision. (B) The kinetic energy of the system is conserved before and after the collision. (C) The internal force can change the momentum of each particle. (D) The momentum of the system is conserved before and after the collision.
Question 33 Which statement is TRUE according to the kinetic molecular theory? The average kinetic energy of a particle is proportional to the temperature in Kelvin. The size of the particle is large compared to the volume. The collisions of particles with one another is not completely elastic. A single particle does not move in a straight line.
The energy of motion is called: Kinetic energy. potential energy, inertial energy. Power. In an inelastic collision: momentum is conserved. kinetic energy is conserved, both (a) and (b). If the velocity of a moving object is doubled and its mass is cut in half, the kinetic energy of the object is; remains the same, doubled quadrupled, cut in half. When the net work done on an object is speed of the object is me on an object is zero; the...
True-False (2 points each). Circle the correct answer. 1) D F An isolated system has a net external force of zero. 2)TF Momentum is conserved in an isolated system. 3) TT The definition of work is W = Fdcos(0) 4) T (F) The spring force is proportional to the displacement of the spring end. 5) O T Engines and generators can be 100% efficient. 6) DF The impulse is equal to the change in momentum. 7) DF In an isolated...
3. (10 pts) High energy particle accelerators convert part of the energy of colliding particles into the masses of particles produced in the collisions. Consider a collision of two protons that produces two charged kaons. The mass of the proton is mp- 938.3 MeV/c2, and the mass of each kaon is mK 493.7 MeV/c2. The reaction is a) The total energy (kinetic energy and rest energy) and total momentum is conserved. Suppose one of the protons is at rest in...
A rigid, massless rod has three particles with equal masses attached to it as shown in Figure P8.59. The rod is free to rotate in a vertical plane about a friction-less axle perpendicular to the rod through the point Pand is released from rest in the horizontal position at t - 0. Assuming m and d are known, find (a) the moment of inertia of the system (rod plus particles) about the pivot, (b) the torque acting on the system...
1. A 30.00 kg mass moving with the velocity of 10 m/s. The momentum of the body will be A. 144.2 kg m/s. B. 187.8 kg m/s. C. 320.0 kg m/s. D. 442.4 kg m/s. E. None of the above 2. Out of the following which one is not a vector quantity? A. Force B. Impulse C. Mass D. velocity 3. Impulse is the product of which two quantities? A. Mass and Time B. Mass and Momentum C. Force and...